MST to COT
+2hMST
MSTSOURCECOT
COTGreen rows indicate typical business hours (9 AM - 5 PM)
MST and COT on the World Map
The map below highlights the MST (Mountain Standard Time) and COT (Colombia Time) timezone regions across the globe.
MST – Mountain Standard Time
UTC-07:00Mountain Standard Time (MST) is the time zone for the Mountain region of North America, 7 hours behind UTC.
- •Arizona does not observe daylight saving time, staying on MST year-round.
- •The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
- •Denver, the 'Mile High City', is the largest city fully in MST.
- •MST covers 6 US states entirely and parts of several others.
COT – Colombia Time
UTC-05:00Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.
- •Colombia does not observe daylight saving time.
- •COT is the same offset as EST (UTC-05:00).
- •Bogotá sits at 2,640m elevation, making it one of the highest capital cities.
Time Conversion Guide: MST to COT
MST runs on Mountain Standard Time (MST) at UTC-07:00. COT runs on Colombia Time (COT) at UTC-05:00. That puts MST 2 hours ahead of COT — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in MST it is 11:00 AM in COT. Midnight in MST is 2:00 AM in COT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
MST to COT time conversion table
| MST (MST) | COT (COT) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert MST to COT time
- Scheduling a call from MST to COT: a 10:00 AM start in MST lands at 12:00 PM in COT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both MST and COT are inside the 9-to-5 working day between 9:00 AM and 3:00 PM MST time (11:00 AM–5:00 PM COT). That is roughly 6 hours of usable overlap.
- Coordinating a MST-based team with COT contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM MST" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM MST as the recurring meeting window if you work primarily from MST and need COT colleagues present.
About MST (Mountain Standard Time)
Mountain Standard Time (MST) covers the Rocky Mountain region of the United States and Canada. Arizona is notable for not observing daylight saving time, staying on MST year-round (except the Navajo Nation). The time zone includes major cities like Denver, Phoenix, Calgary, and Salt Lake City. During summer, most areas switch to Mountain Daylight Time (MDT, UTC-06:00).
About COT (Colombia Time)
Colombia Time (COT) is used throughout Colombia. Colombia does not observe daylight saving time. COT shares the same offset as EST (UTC-05:00). Bogotá, the capital, is one of the largest cities in South America.
Best time to call between MST and COT
Both MST and COT sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM MST, which is 11:00 AM–5:00 PM COT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
MST and COT share 6 hours of working-hours overlap (9:00 AM–3:00 PM MST), so scheduling a live meeting is straightforward.
MST is 2 hours ahead of COT (MST UTC-07:00 → COT UTC-05:00). The shared working window is 9:00 AM–3:00 PM MST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
MST
☀ Currently in DST
Standard: UTC-07:00 · DST: UTC-06:00
Clocks fall back on Sun, Nov 1, 2026
COT
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between MST and COT?
MST (MST, UTC-07:00) is 2 hours ahead of COT (COT, UTC-05:00). The gap is currently +2h.
How do I convert MST time to COT time?
Add +2h to MST local time. For example, 9:00 AM in MST is 11:00 AM in COT.
What time is it in COT right now?
COT uses COT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from MST.
What is the best time to call COT from MST?
Call between 9:00 AM and 3:00 PM MST — that maps to 11:00 AM–5:00 PM COT and keeps both parties inside the working day.
Which is ahead, MST or COT?
MST is 2 hours ahead of COT. When it is 12:00 PM in MST it is 2:00 PM in COT.
Does daylight saving time affect the MST–COT difference?
Neither zone observes daylight saving time, so the +2h offset between MST and COT is fixed all year.
Which other cities share MST's time zone?
MST also covers Denver, Phoenix, Salt Lake City, Calgary, Edmonton, Albuquerque, El Paso, Tucson and 2 more.
Which countries use MST, MST's zone?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Is there a day difference between MST and COT?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between MST and COT?
COT is +2h from MST.
What timezone is MST in?
MST operates on its local timezone.
What timezone is COT in?
COT operates on its local timezone.
Which countries use MST (Mountain Standard Time)?
MST is used in United States (Mountain), Canada (Alberta), Mexico (Chihuahua, Sonora).
Does MST observe daylight saving time?
Yes, MST switches to MDT during summer months.
What are some interesting facts about MST?
Arizona does not observe daylight saving time, staying on MST year-round. The Navajo Nation in Arizona does observe DST, unlike the rest of the state.
Which cities are in the COT timezone?
Major cities in the COT timezone include Bogotá, Medellín, Cali, Barranquilla, Cartagena.
What is the UTC offset for COT?
Colombia Time (COT) is at UTC-05:00.
What should I know about the COT timezone?
Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).
When is it midnight in MST, what time is it in COT?
When it is 12:00 AM (midnight) in MST (MST), it is +2h later in COT (COT).
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See every conversion from MST →·See every conversion from COT →